| River Misbourne | |
|---|---|
 River Misbourne near Chalfont St Giles | |
| Location | |
| Country | England |
| Physical characteristics | |
| Source | |
| • location | Great Missenden Buckinghamshire |
| • coordinates | 51°42′36″N 0°42′44″W / 51.71000°N 0.71222°W |
| • elevation | 129m |
| Mouth | |
• location | River Colne near Denham |
• coordinates | 51°33′43″N 0°29′01″W / 51.56194°N 0.48361°W |
• elevation | 34m |
| Length | 27km (16.8 miles) |
| Basin features | |
| River system | Thames |
The River Misbourne rises in a field on the outskirts of Great Missenden in Buckinghamshire, passing through Little Missenden, Old Amersham, Chalfont St Giles, Chalfont St Peter and under the Chiltern railway line and the M25 motorway to its confluence with the River Colne just north of where the Colne is crossed by Western Avenue, the A40 road. It falls by around 94 m (310 ft) in the course of its 27 km (17 mi) length.